Extended-range power assembly and extended-range electric vehicle
By incorporating oil guide ribs and oil collection ribs into the range-extended powertrain, the lubricating oil is guided by gravity, thus solving the cooling and lubrication problems of the reducer gears and bearings, achieving cost reduction and performance improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2026-03-20
Smart Images
Figure CN119196284B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of range-extended electric vehicle technology, and more specifically, to a range-extended powertrain and a range-extended electric vehicle. Background Technology
[0002] With the development of new energy technologies, range-extended electric vehicles have been more widely used. The range-extended powertrain is also equipped with two reducers, and the output shaft of each reducer is connected to the input shaft of a motor. During the process of each motor driving a reducer, the gears and bearings of each shaft of the reducer will generate a lot of heat and wear due to friction. If they are not cooled and lubricated in time, the transmission of the range-extended powertrain will fail.
[0003] To achieve cooling and lubrication of the range-extended powertrain, an oil churning disc is usually installed. However, the oil churning disc not only results in significant oil loss but also increases the cost of the range-extended powertrain. Summary of the Invention
[0004] This application provides a range-extended powertrain and a range-extended electric vehicle. The cooling and lubrication effects of the gears and bearings on each shaft of the reducer connected to the generator in the range-extended powertrain are improved, and the production cost of the range-extended powertrain is reduced. Consequently, the performance of both the range-extended powertrain and the range-extended electric vehicle is improved, while the production cost of the range-extended electric vehicle is reduced.
[0005] Firstly, a range-extended powertrain is provided. The range-extended powertrain includes two housings. One side of one housing includes two parallel motor cavities, which are used to fix the stator of an electric motor and the stator of a generator, respectively. The other side of one housing encloses the other housing to form a reducer housing cavity, which accommodates two parallel-shaft reducers. One parallel-shaft reducer includes an input shaft, an intermediate shaft, and an output shaft; the other parallel-shaft reducer includes another input shaft and another output shaft. The other side of one housing includes two shaft holes, two bearing grooves, and an oil guide rib. One shaft hole connects the reducer housing cavity and one motor cavity to a bearing for fixing one input shaft, and the other shaft hole connects the reducer housing cavity and another motor cavity to a bearing for fixing the other input shaft. One bearing groove fixes a bearing on the intermediate shaft, and the other bearing groove fixes a bearing on the other output shaft. The distance between the bearing groove and the shaft hole is greater than the distance between the two shaft holes, and the distance between the bearing groove and the shaft hole is less than the distance between the two shaft holes. An oil guide rib extends from one shaft hole to another, and the extension direction of an oil guide rib is inclined relative to the horizontal plane to guide the lubricating oil collected by one oil guide rib to another shaft hole.
[0006] The range-extended powertrain provided in this application embodiment has a design where the distance between one bearing groove and another shaft hole is greater than the distance between the two shaft holes, and the distance between the other bearing groove and one shaft hole is less than the distance between the two shaft holes. This allows for the use of the space between the two shaft holes to accommodate oil guide ribs. These ribs collect lubricating oil ejected from the gears on the input shaft of a parallel-shaft reducer connected to the motor. Furthermore, the oil guide ribs are inclined relative to the horizontal plane, allowing gravity to guide the collected lubricating oil to the other shaft hole. This provides passive cooling and lubrication to the gears and bearings on the input shaft of the other parallel-shaft reducer connected to the generator. This not only improves the cooling and lubrication of the gears and bearings on each shaft of the other parallel-shaft reducer connected to the generator but also reduces the production cost of the range-extended powertrain, thereby improving its performance.
[0007] In one implementation, an oil guide rib is spaced between one shaft hole and another shaft hole, and the distance between one end of the oil guide rib and one shaft hole along the extension direction of the oil guide rib is greater than the distance between the other end of the oil guide rib and another shaft hole.
[0008] Correspondingly, an oil guide rib will allow the collected lubricating oil to be better directed to another shaft hole, further improving the passive cooling and passive lubrication of the gears and bearings of the various shafts of another parallel shaft reducer connected to the generator drive.
[0009] In one implementation, one side of the housing includes a protrusion, the side of the protrusion facing the other shaft hole includes an oil outlet, the outlet of the oil outlet faces the other shaft hole, and an oil guide rib is used to collect the lubricating oil output from the oil outlet.
[0010] Correspondingly, an oil guide rib can collect the lubricating oil output from a raised oil outlet, allowing an oil guide rib to collect more lubricating oil.
[0011] In one implementation, the length of a protrusion is less than the length of an oil guide rib, the distance between a protrusion and a shaft hole is greater than the distance between the other end of an oil guide rib and another shaft hole, and the distance between an oil outlet and a shaft hole is greater than the distance between one end of an oil guide rib and a shaft hole.
[0012] Correspondingly, not only can the production cost of a protrusion be reduced, but the amount of lubricating oil collected by a guide rib and output from an oil outlet of the protrusion can also be further increased.
[0013] In one implementation, an oil guide rib includes a through hole for the lubricating oil collected by the oil guide rib to flow out. The through hole extends through the oil guide rib along its thickness direction.
[0014] Correspondingly, an oil guide rib can not only guide the collected lubricating oil to another shaft hole, but also guide part of the collected lubricating oil through the through hole to other components, thereby increasing the cooling and lubrication effect of other components.
[0015] In one implementation, the distance between a through hole and one end of an oil guide rib is greater than or equal to the distance between the through hole and the other end of an oil guide rib.
[0016] The fact that the distance between one end of a through hole and one end of an oil guide rib is greater than or equal to the distance between the other end of a through hole and one end of an oil guide rib can be understood as follows: relative to one shaft hole, one through hole of an oil guide rib is located closer to the other shaft hole. In this way, an oil guide rib can guide a portion of the lubricating oil it collects through the through hole to another bearing groove located between the two shaft holes, thereby achieving passive cooling and passive lubrication of the gears and bearings of the output shaft of another parallel shaft reducer connected to the generator drive.
[0017] The range-extended powertrain provided in this application only requires an oil guide rib on the other side of a housing and a through hole on the side of the oil guide rib near another shaft hole to achieve passive cooling and passive lubrication of the gears and bearings of each shaft of another parallel shaft reducer connected to the generator. This not only further improves the cooling and lubrication effect of the gears and bearings of each shaft of the other parallel shaft reducer connected to the generator, but also further reduces the production cost of the range-extended powertrain.
[0018] In one implementation, a through hole communicates with one end face of an oil guide rib. One end face of the oil guide rib faces another housing, and the distance between the end face of the oil guide rib and the other housing along the width of the oil guide rib is less than or equal to the distance between each bearing groove or each shaft hole and the other housing. In this way, an oil guide rib can guide as much of the collected lubricating oil as possible into the other shaft hole or another bearing groove.
[0019] In one implementation, the other side of the housing also includes an oil collecting rib, which is spaced apart from an oil guiding rib. The distance between one end of the oil collecting rib and a shaft hole is greater than the distance between the other end of the oil collecting rib and another shaft hole. The distance between the other end of the oil collecting rib and another shaft hole is less than or equal to the distance between the other end of the oil guiding rib and another shaft hole. The oil collecting rib is used to collect the lubricating oil flowing out from the other end of the oil guiding rib.
[0020] Correspondingly, by simply setting an oil collecting rib at intervals near an oil guide rib on the other side of a housing, the lubricating oil collected by one oil guide rib can be directed to an oil collecting rib, further reducing the production cost of the range-extended powertrain.
[0021] In addition, the other end of an oil collecting rib is closer to another shaft hole than the other end of an oil guiding rib. In this way, an oil collecting rib can not only collect the lubricating oil flowing out of the other end of an oil guiding rib, but also collect a larger amount of lubricating oil from the other end of an oil guiding rib.
[0022] In one implementation, one end of an oil collecting rib faces another bearing groove, the distance between one end of an oil collecting rib and an oil guiding rib is greater than the distance between the other end of an oil collecting rib and an oil guiding rib, and an oil collecting rib is also used to guide the lubricating oil collected by an oil collecting rib to another bearing groove.
[0023] Correspondingly, under the action of gravity, an oil collecting rib can smoothly guide the collected lubricating oil to another bearing groove, thereby achieving passive cooling and passive lubrication of the gears and bearings of the output shaft of another parallel shaft reducer connected to the generator drive.
[0024] In one implementation, another oil collecting rib is included on the other side of the housing, arranged adjacent to an oil guiding rib. The distance between one end of the other oil collecting rib and a shaft hole is less than or equal to the distance between a through hole of an oil guiding rib and a shaft hole, and the distance between the other end of the other oil collecting rib and another shaft hole is less than or equal to the distance between a through hole of an oil guiding rib and another shaft hole. The other oil collecting rib is used to collect lubricating oil flowing out of the through hole of an oil guiding rib.
[0025] Correspondingly, by simply setting another oil collecting rib near an oil guide rib on the other side of the housing, the lubricating oil flowing out of one through hole of one oil guide rib can be directed to another oil collecting rib, further reducing the production cost of the range-extended powertrain.
[0026] In addition, another oil collecting rib is located below a through hole of an oil guide rib. In this way, the other oil collecting rib can not only collect the lubricating oil flowing out of a through hole of an oil guide rib, but also collect a relatively large amount of lubricating oil from a through hole of an oil guide rib.
[0027] In one implementation, the other end of another oil collecting rib faces another bearing groove, and the distance between one end of the other oil collecting rib and an oil guiding rib is smaller than the distance between the other end of the other oil collecting rib and an oil guiding rib. The other oil collecting rib is also used to guide the lubricating oil collected by the other oil collecting rib to another bearing groove.
[0028] Correspondingly, under the action of gravity, the other oil collecting rib can smoothly guide the collected lubricating oil to another bearing groove, thereby achieving passive cooling and passive lubrication of the gears and bearings of the output shaft of another parallel shaft reducer connected to the generator drive.
[0029] In one implementation, the other side of the housing also includes two grooves, each extending at an angle relative to the horizontal plane. One groove connects to another shaft hole and is used to guide collected lubricating oil into the other shaft hole. The other groove connects to another bearing groove and is used to guide collected lubricating oil into another bearing.
[0030] Correspondingly, by simply providing a groove on the other side of one housing that connects to another shaft hole or another bearing groove, and setting the groove at an angle relative to the horizontal plane, lubricating oil can flow into the other shaft hole or another bearing groove under the action of gravity, thereby achieving passive cooling and passive lubrication of the gears and bearings of each shaft of the other parallel shaft reducer connected to the generator drive. This further reduces the production cost of the range-extended powertrain.
[0031] In one implementation, one side of another housing faces the other side of one housing, and one side of the other housing includes another oil guide rib. Along the width direction of one oil guide rib, the other oil guide rib is combined with one oil guide rib to form an oil guide groove.
[0032] By providing another oil guide rib on one side of the other housing, which cooperates with an oil guide rib of the first housing, the other oil guide rib of the other housing can collect the lubricating oil from the first oil guide rib. Furthermore, the lubricating oil collected by the other oil guide rib of the other housing can lubricate the components on one side of the other housing. This improves the cooling and lubrication of the gears and bearings of each shaft in the various reducers of the range-extended powertrain, and reduces the production cost of the range-extended powertrain.
[0033] In one implementation, the extension direction of the other oil guide rib is the same as that of the first oil guide rib, and the acute angle between the extension direction of the oil guide groove and the horizontal plane is within the range of [15 degrees, 30 degrees]. This improves the efficiency of the oil guide groove in collecting lubricating oil and the efficiency of the oil guide groove in guiding the collected lubricating oil to another shaft hole.
[0034] In one implementation, one end of one of the oil guide ribs and the other end of the oil guide rib are bent toward one side of an oil outlet. This prevents the lubricating oil collected by one oil guide rib from flowing back along one end of the first rib and the lubricating oil collected by the other rib from flowing back along the other end of the second rib.
[0035] In one implementation, the length of the second oil guide rib is equal to the length of the first oil guide rib. This improves the efficiency of the oil guide groove formed by the combination of the two oil guide ribs in collecting lubricating oil, as well as the efficiency of the oil guide groove in guiding the collected lubricating oil to another shaft hole.
[0036] In a second aspect, a range-extended electric vehicle is provided, comprising wheels, a battery pack, and a range-extended powertrain as described in any one of the first aspects and possible implementations thereof, the range-extended powertrain being used to receive power from the battery pack and drive the wheels.
[0037] Because the range-extended powertrain provided by the first aspect has better cooling and lubrication effects and lower production costs, the production costs of the range-extended electric vehicles provided by the second aspect can also be reduced. Attached Figure Description
[0038] Figure 1 This is a schematic diagram of the structure of an example range-extended electric vehicle provided in an embodiment of this application.
[0039] Figure 2 This is a schematic diagram of a range-extended powertrain provided in an embodiment of this application.
[0040] Figure 3 and Figure 4 They are respectively Figure 2 The diagram shows a structural schematic of a housing of a range-extended powertrain.
[0041] Figure 5 for Figure 4 An enlarged schematic diagram of part A of a housing is shown.
[0042] Figure 6 for Figure 2 The diagram shows the structure of another housing of the range-extended powertrain.
[0043] Figure 7 for Figure 6 An enlarged schematic diagram of part B of another housing shown. Detailed Implementation
[0044] The technical solutions in this application will now be described with reference to the accompanying drawings.
[0045] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.
[0046] The terms "upper," "lower," "left," "right," "inner," and "outer" used in the embodiments of this application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0047] References to “some embodiments” and the like in this specification mean that one or more embodiments of this application include the specific features, structures, or characteristics described in connection with that embodiment. Therefore, phrases such as “some embodiments” appearing in different parts of this specification do not necessarily refer to the same embodiments, but rather mean “one or more, but not all, embodiments”, unless otherwise specifically emphasized. The terms “comprising,” “including,” “having,” and variations thereof mean “including, but not limited to,” unless otherwise specifically emphasized.
[0048] The term "equal" in this application does not mean equal in the strict sense, but rather within the allowable error range. Similarly, "perpendicular" does not mean perpendicular in the strict sense, but rather within the allowable error range. Likewise, "parallel" does not mean parallel in the strict sense, but rather within the allowable error range.
[0049] In this embodiment, the same reference numeral denotes the same component or part. In this embodiment, for multiple identical parts, the reference numeral may only be used to label one of the parts as an example. The reference numerals also apply to other identical parts or components. Furthermore, the dimensions and sizes of the parts shown in the drawings are merely exemplary.
[0050] This application provides a range-extended powertrain, comprising two housings. One housing includes two parallel motor cavities on one side, which respectively secure the stator of a motor and the stator of a generator. The other side of the housing encloses the other housing to form a reducer housing, which accommodates two parallel-shaft reducers. One parallel-shaft reducer includes an input shaft, an intermediate shaft, and an output shaft; the other parallel-shaft reducer includes another input shaft and another output shaft. The other side of the housing includes two shaft holes, two bearing slots, and an oil guide rib. One shaft hole connects the reducer housing and a motor cavity to a bearing for securing one input shaft; the other shaft hole connects the reducer housing and another motor cavity to a bearing for securing the other input shaft. One bearing slot secures a bearing on the intermediate shaft, and the other bearing slot secures a bearing on the other output shaft. The distance between the bearing slot and the shaft hole is greater than the distance between the two shaft holes, and the distance between the bearing slot and the shaft hole is less than the distance between the two shaft holes. An oil guide rib extends from one shaft hole to another, and the extension direction of an oil guide rib is inclined relative to the horizontal plane to guide the lubricating oil collected by one oil guide rib to another shaft hole.
[0051] The range-extended powertrain provided in this application embodiment has a design where the distance between one bearing groove and another shaft hole is greater than the distance between the two shaft holes, and the distance between the other bearing groove and one shaft hole is less than the distance between the two shaft holes. This allows for the installation of oil guide ribs within the space between the two shaft holes. These ribs collect lubricating oil ejected from the gears on the input shaft of a parallel-shaft reducer connected to the motor. Furthermore, the oil guide ribs are inclined relative to the horizontal plane, allowing gravity to guide the collected lubricating oil to the other shaft hole, achieving passive cooling and lubrication of the gears and bearings on the input shaft of the other parallel-shaft reducer connected to the generator. This not only improves the cooling and lubrication of the gears and bearings on each shaft of the other parallel-shaft reducer connected to the generator but also reduces the production cost of the range-extended powertrain, thereby improving its performance.
[0052] This application also provides a range-extended electric vehicle, which will be described below in conjunction with... Figure 1 The range-extended electric vehicle provided in the embodiments of this application will be described in detail first.
[0053] Figure 1 This is a schematic structural diagram of a range-extended electric vehicle provided as an embodiment of this application. Figure 1As shown, the range-extended electric vehicle 1 includes one or more powertrains 10, a battery pack 20, and wheels 30. The powertrain 10 is used to: receive power from the battery pack 20, convert electrical energy into mechanical energy, and drive the wheels 30 to rotate.
[0054] The range-extended electric vehicle provided in this application embodiment is also called a range-extended electric vehicle, or simply REEV.
[0055] The range-extended powertrain 10 includes two motors: one electric motor and one generator. The electric vehicle 1 can switch between pure electric and range-extended operating modes. In pure electric mode, the battery pack 20 powers the electric motor, driving the electric vehicle 1. When the battery 20 has low or depleted charge, the engine can be started, switching the electric vehicle 1 to range-extended operating mode. In range-extended mode, the engine drives the generator to generate electricity, which can be used to charge the battery 20 or power the electric motor.
[0056] The following is combined Figures 2 to 7 The structure of the range-extended powertrain provided in the embodiments of this application will be described in detail.
[0057] like Figure 2 As shown, the range-extended powertrain 10 includes a housing 100. (As indicated...) Figure 3 and Figure 4 As shown, one side of a housing 100 includes a motor cavity 111 and another motor cavity 112 arranged in parallel. One motor cavity 111 is used to fix the stator of the electric motor of the range extender powertrain 10, and the other motor cavity 112 is used to fix the stator of the generator of the range extender powertrain 10.
[0058] like Figure 2 As shown, the range extender powertrain 10 also includes another housing 200, with one side of the housing 100 enclosing one side of the other housing 200 to form a reducer receiving cavity for accommodating two parallel-shaft reducers arranged in parallel.
[0059] It should be noted that the parallel arrangement involved in the embodiments of this application can be understood as a parallel arrangement along the horizontal direction. The horizontal direction is perpendicular to the direction of gravity. A parallel shaft reducer can be understood as one in which the shafts of the reducer are arranged in parallel.
[0060] like Figure 2As shown, a parallel shaft reducer includes an input shaft 311, an intermediate shaft 312, and an output shaft 313. The input shaft 311 passes through a gear 3111 and two bearings 3112-3113; the intermediate shaft 312 passes through two gears 3121-3122 and two bearings 3123-3124; and the output shaft 313 passes through a gear 3131 and two bearings (…). Figure 2 Only the other bearing 3132 of the two bearings is shown. A gear 3111 on an input shaft 311 and a gear 3121 on an intermediate shaft 312 mesh with each other, enabling the input shaft 311 of a parallel shaft reducer to drive the rotation of an intermediate shaft 312. Another gear 3122 on an intermediate shaft 312 and a gear 3131 on an output shaft 313 mesh with each other, enabling the intermediate shaft 312 of a parallel shaft reducer to drive the rotation of an output shaft 313.
[0061] Another parallel-shaft reducer includes another input shaft 321 and another output shaft 322. The other input shaft 321 passes through a gear 3211 and two bearings 3212-3213, and the other output shaft 322 passes through a gear 3221 and two bearings (…). Figure 2 Only the other bearing 3222 of the two bearings is shown in the diagram. A gear 3211 on the other input shaft 321 and a gear 3221 on the other output shaft 322 mesh with each other, enabling the other input shaft 321 of the other parallel shaft reducer to drive the rotation of the other output shaft 322. This, in turn, enables the other parallel shaft reducer to reduce the speed of the generator.
[0062] The following is combined Figures 3 to 5 The structure of a housing 100 of the range-extended powertrain 10 is described in detail.
[0063] like Figure 4 As shown, one side of a housing 100 includes a shaft hole 121. The shaft hole 121 of the housing 100 serves to connect a reducer housing cavity and a motor cavity 111, respectively. The shaft hole 121 of the housing 100 also serves to fix a bearing 3112 of an input shaft 311. Furthermore, the shaft hole 121 of the housing 100 also serves to fix a bearing of the motor shaft of an electric motor, which is drively connected to an input shaft 311. In this way, the motor shaft of the electric motor can transmit power to an input shaft 311 of a parallel-axis reducer, thereby controlling the output torque and speed of the electric motor.
[0064] like Figure 4As shown, another shaft hole 122 is also included on the other side of the housing 100. This other shaft hole 122 connects the reducer housing cavity and another motor cavity 112. It also serves to fix a bearing 3212 on another input shaft 321. Furthermore, the other shaft hole 122 of the housing 100 also serves to fix a bearing on the generator's motor shaft, which is drive-connected to the other input shaft 321. In this way, the generator's motor shaft can transmit power to the other input shaft 321 of the parallel shaft reducer, thereby controlling the generator's output torque and speed.
[0065] like Figure 4 As shown, the other side of a housing 100 also includes a bearing groove 123 and another bearing groove 124. One bearing groove 123 of the housing 100 is used to fix a bearing 3123 of an intermediate shaft 312, and the other bearing groove 124 of the housing 100 is used to fix a bearing of another output shaft 322. The distance between one bearing groove 123 and another shaft hole 122 of the housing 100 is greater than the distance between one shaft hole 121 and another shaft hole 122 of the housing 100, and the distance between the other bearing groove 124 and one shaft hole 121 of the housing 100 is less than the distance between one shaft hole 121 and another shaft hole 122 of the housing 100. In other words, a bearing groove 123 of a housing 100 is arranged on the side of a shaft hole 121 of a housing 100 away from the other shaft hole 122 of a housing 100, and another bearing groove 124 of a housing 100 is arranged on the side of the other shaft hole 122 of a housing 100 close to the shaft hole 121 of a housing 100.
[0066] In some embodiments, to make the range-extended powertrain compact, the outer wall of a bearing groove 123 of a housing 100 may be tangent to the wall of a shaft hole 121 of the housing 100. Similarly, the wall of another bearing groove 124 of a housing 100 may also be tangent to the wall of another shaft hole 122 of the housing 100.
[0067] like Figure 4 As shown, another shaft hole 125 is also included on the other side of a housing 100. The other shaft hole 125 of the housing 100 is used to connect to the reducer receiving cavity, and the other shaft hole 125 of the housing 100 is used to fix a bearing of an output shaft 313.
[0068] like Figure 4 and Figure 5As shown, the other side of a housing 100 also includes an oil guide rib 130. The extension direction of the oil guide rib 130 is from one shaft hole 121 of the housing 100 toward another shaft hole 122 of the housing 100. The extension direction of the oil guide rib 130 is inclined relative to the horizontal plane to guide the lubricating oil collected by the oil guide rib 130 to the other shaft hole 122 of the housing 100.
[0069] It should be noted that the extension direction of an oil guide rib 130 can be understood as the length direction of an oil guide rib 130.
[0070] In some embodiments, such as Figure 4 As shown, along the direction of gravity, one shaft hole 121 of a housing 100 is positioned higher than the other shaft hole 122 of the same housing 100. In other words, along the direction of gravity, one shaft hole 121 of a housing 100 is located to the upper left of the other shaft hole 122 of the same housing 100. Furthermore, along the direction of gravity, one end 131 of an oil guide rib 130 is higher than the other end 132 of the same oil guide rib 130. Thus, the oil guide rib 130 can guide the collected lubricating oil to the other shaft hole 122 of the housing 100.
[0071] The range-extended powertrain 10 provided in this application embodiment has a larger distance between a bearing groove 123 of a housing 100 and another shaft hole 122 of the housing 100 than the distance between a shaft hole 121 of the housing 100 and another shaft hole 122 of the housing 100, and a smaller distance between another bearing groove 124 of the housing 100 and a shaft hole 121 of the housing 100 than the distance between a shaft hole 121 of the housing 100 and another shaft hole 122 of the housing 100. Thus, an oil guide rib 130 can be provided within the space between the shaft hole 121 and the other shaft hole 122 of the housing 100. The oil guide rib 130 can collect the lubricating oil thrown out by the gear on the input shaft 311 of a parallel shaft reducer.
[0072] Furthermore, an oil guide rib 130 is inclined relative to the horizontal plane. Under the influence of gravity, the oil guide rib 130 can direct the collected lubricating oil to another shaft hole 122 of the housing 100, achieving passive cooling and lubrication of the gears and bearings of the other input shaft 321 of the other parallel shaft reducer connected to the generator drive. This not only improves the cooling and lubrication effect of the gears and bearings of the various shafts of the other parallel shaft reducer connected to the generator drive, but also reduces the production cost of the range-extended powertrain 10. Consequently, it improves the performance of the range-extended powertrain 10.
[0073] In some embodiments, such as Figure 4 As shown, an oil guide rib 130 is spaced between one shaft hole 121 and another shaft hole 122 of a housing 100. Along the extending direction of the oil guide rib 130, the distance between one end 131 of the oil guide rib 130 and one shaft hole 121 of the housing 100 is greater than the distance between the other end 132 of the oil guide rib 130 and the other shaft hole 122 of the housing 100. In this way, the oil guide rib 130 can better guide the collected lubricating oil to the other shaft hole 122 of the housing 100, further improving the passive cooling and passive lubrication of the gears and bearings on each shaft of the other parallel shaft reducer.
[0074] In some embodiments, such as Figure 4 As shown, one side of the housing 100 includes a protrusion 150. The side of the protrusion 150 facing the other shaft hole 122 of the housing 100 includes an oil outlet 151. The outlet of the oil outlet 151 faces the other shaft hole 122 of the housing 100. An oil guide rib 130 is used to collect the lubricating oil output from the oil outlet 151. In this way, the oil guide rib 130 can concentrate and collect the lubricating oil output from the oil outlet 151, so that the oil guide rib 130 can collect more lubricating oil.
[0075] In some embodiments, the length of the protrusion 150 is less than the length of an oil guide rib 130, the distance between the protrusion 150 and a shaft hole 121 of a housing 100 is greater than the distance between the other end 132 of the oil guide rib 130 and another shaft hole 122 of the housing 100, and the distance between the oil outlet 151 and a shaft hole 121 of the housing 100 is greater than the distance between one end 131 of the oil guide rib 130 and a shaft hole 121 of the housing 100. This not only reduces the production cost of the protrusion 150 but also further increases the amount of lubricating oil collected by the oil guide rib 130 and output from the oil outlet 151.
[0076] In some embodiments, the protrusion 150 includes a through hole for connecting the oil outlet 151 and the oil pump outlet. This ensures that the amount of lubricating oil output from the oil outlet 151 of the protrusion 150 is sufficient. This, in turn, ensures that the gears and bearings of each shaft of the other parallel shaft reducer have sufficient lubricating oil.
[0077] In some embodiments, the cross-sectional area of the oil outlet 151 is smaller than the cross-sectional area of the through hole of the protrusion 150. This allows lubricating oil to flow from the through hole of the protrusion 150 into the oil outlet 151, resulting in a larger lubricating oil flow rate. Furthermore, this improves the efficiency of the oil guide rib 130 in collecting lubricating oil.
[0078] In some embodiments, one end 131 of an oil guide 130 is bent toward the oil outlet 151. This prevents the lubricating oil collected by the oil guide 130 from flowing back along one end 131 of the oil guide 130.
[0079] In some embodiments, such as Figure 4 and Figure 5 As shown, another side of the housing 100 also includes an oil collecting rib 140. The oil collecting rib 140 and the oil guiding rib 130 of the housing 100 are arranged alternately. The distance between one end 141 of the oil collecting rib 140 and one shaft hole 121 of the housing 100 is greater than the distance between the other end 142 of the oil collecting rib 140 and another shaft hole 122 of the housing 100. The distance between the other end 142 of the oil collecting rib 140 and another shaft hole 122 of the housing 100 is less than or equal to the distance between the other end 132 of the oil guiding rib 130 and another shaft hole 122 of the housing 100. The oil collecting rib 140 of the housing 100 is used to collect the lubricating oil flowing out from the other end 132 of the oil guiding rib 130.
[0080] In this way, by simply setting an oil collecting rib 140 at intervals near an oil guide rib 130 on the other side of a housing 100, the lubricating oil collected by an oil guide rib 130 can be directed to an oil collecting rib 140, further reducing the production cost of the range-extended powertrain 10.
[0081] Furthermore, the other end 142 of an oil collecting rib 140 of a housing 100 is closer to another shaft hole 122 of the housing 100 than the other end 132 of an oil guiding rib 130. In this way, the oil collecting rib 140 of the housing 100 can not only collect the lubricating oil flowing out of the other end 132 of the oil guiding rib 130, but also collect a larger amount of lubricating oil from the other end 132 of the oil guiding rib 130.
[0082] In some embodiments, such as Figure 4 and Figure 5As shown, one end 141 of an oil collecting rib 140 of a housing 100 faces another bearing groove 124 of the housing 100. The distance between one end 141 of the oil collecting rib 140 and an oil guiding rib 130 is greater than the distance between the other end 142 of the oil collecting rib 140 and the oil guiding rib 130. The oil collecting rib 140 of the housing 100 also serves to guide the lubricating oil collected by the oil collecting rib 140 to the other bearing groove. In this way, under the action of gravity, the oil collecting rib 140 of the housing 100 can smoothly guide the lubricating oil collected by it to the other bearing groove 124 of the housing 100, realizing passive cooling and passive lubrication of the gears and bearings of the other output shaft 322 of the other parallel shaft reducer connected to the generator drive.
[0083] In some embodiments, an oil guide rib 130 includes a through hole for the lubricating oil collected by the oil guide rib 130 to flow out. The through hole extends through the oil guide rib 130 along its thickness direction. In this way, the oil guide rib 130 can not only guide the collected lubricating oil to another shaft hole 122 of the housing 100, but also guide a portion of the collected lubricating oil through the through hole to other components, thereby increasing the cooling and lubrication effect of other components.
[0084] It should be noted that the thickness direction of an oil guide rib 130 can be understood as the height direction of an oil guide rib 130.
[0085] In some embodiments, the distance between the through hole of an oil guide rib 130 and one end 131 of the oil guide rib 130 is greater than or equal to the distance between the through hole of the oil guide rib 130 and the other end 132 of the oil guide rib 130. The through hole of an oil guide rib 130 is located closer to the other shaft hole 122 of the housing 100 than to one shaft hole 121 of the housing 100. In this way, a portion of the lubricating oil collected by an oil guide rib 130 can be guided through its through hole to another bearing groove 124 located between one shaft hole 121 and the other shaft hole 122 of the housing 100, achieving passive cooling and passive lubrication of the gears and bearings of the other output shaft 322 of the other parallel shaft reducer connected to the generator drive. Furthermore, this not only further improves the cooling and lubrication effect of the gears and bearings of the various shafts of the other parallel shaft reducer connected to the generator drive, but also further reduces the production cost of the range extender powertrain 10.
[0086] In some embodiments, the through hole of an oil guide rib 130 communicates with one end face of the oil guide rib 130. One end face of the oil guide rib 130 faces another housing 200, and the distance between one end face of the oil guide rib 130 and the other housing 200 along the width direction is less than or equal to the distance between each bearing groove or each shaft hole of one housing 100 and the other housing 200. In this way, the oil guide rib 130 can guide as much of the collected lubricating oil as possible into another shaft hole 122 or another bearing groove 124 of one housing 100.
[0087] It should be noted that the width of an oil guide rib 130 can be understood as the width of a housing 100.
[0088] In some embodiments, another oil collecting rib is also included on the other side of a housing 100, and the other oil collecting rib of the housing 100 is arranged adjacent to an oil guiding rib 130. The distance between one end of the other oil collecting rib of the housing 100 and a shaft hole 121 of the housing 100 is less than or equal to the distance between the through hole of the oil guiding rib 130 and a shaft hole 121 of the housing 100; the distance between the other end of the other oil collecting rib of the housing 100 and another shaft hole 122 of the housing 100 is less than or equal to the distance between the through hole of the oil guiding rib 130 and another shaft hole 122 of the housing 100; the other oil collecting rib of the housing 100 is used to collect lubricating oil flowing out of the through hole of the oil guiding rib 130.
[0089] In this way, by simply setting another oil collecting rib near an oil guide rib 130 on the other side of a housing 100, the lubricating oil flowing out of the through hole of an oil guide rib 130 can be directed to another oil collecting rib of a housing 100, further reducing the production cost of the range-extended powertrain 10.
[0090] In addition, another oil collecting rib of the housing 100 is located below the through hole of the oil guiding rib 130. In this way, the other oil collecting rib of the housing 100 can not only collect the lubricating oil flowing out of the through hole of the oil guiding rib 130, but also collect a relatively large amount of lubricating oil from the through hole of the oil guiding rib 130.
[0091] In some embodiments, the other end of another oil collecting rib of one housing 100 faces another bearing groove 124 of the housing 100. The distance between one end of the other oil collecting rib of one housing 100 and an oil guiding rib 130 is smaller than the distance between the other end of the other oil collecting rib of one housing 100 and an oil guiding rib 130. The other oil collecting rib of one housing 100 is also used to guide the lubricating oil collected by the other oil collecting rib to the other bearing groove 124 of the housing 100. In this way, under the action of gravity, the other oil collecting rib of one housing 100 can smoothly guide the lubricating oil collected by it to the other bearing groove 124 of the housing 100, thereby achieving passive cooling and passive lubrication of the gears and bearings of the other output shaft 322 of the other parallel shaft reducer connected to the generator drive.
[0092] In some embodiments, there is no gap between one end of another oil collecting rib of a housing 100 and an oil guiding rib 130. This increases the amount of lubricating oil collected by the other oil collecting rib of the housing 100 from the through hole of the oil guiding rib 130.
[0093] In some embodiments, the middle portion of another oil collecting rib of a housing 100 is bent toward the side opposite to another shaft hole 122 of the housing 100. This reduces the impact force of lubricating oil flowing out of the through hole of one oil guide rib 130 on the other oil collecting rib of the housing 100.
[0094] In some embodiments, such as Figure 4 and Figure 5 As shown, another side of the housing 100 also includes a groove 160. This groove 160 connects to another shaft hole 122 of the housing 100, allowing collected lubricating oil to be introduced into the other shaft hole 122. Thus, under the influence of gravity, the lubricating oil flows along the groove 160 into the other shaft hole 122, achieving passive cooling and lubrication of the gears and bearings of the other input shaft 321 of the parallel shaft reducer connected to the generator drive. This further reduces the production cost of the range extender powertrain 10.
[0095] In some embodiments, such as Figure 4 and Figure 5As shown, a groove 160 of a housing 100 is arranged on the side opposite to one end 141 of an oil collecting rib 140 at the other end 142 of the housing 100. The groove 160 and the other end 142 of the oil collecting rib 140 are arranged adjacent to each other, and there is a gap between the groove 160 and the other end 142 of the oil collecting rib 140. In this way, a portion of the lubricating oil flowing out from the other end 132 of an oil guide rib 130 can flow into the groove 160 of the housing 100 along the gap between the groove 160 and the other end 142 of the oil collecting rib 140, and then into another shaft hole 122 of the housing 100. Another portion of the lubricating oil flowing out from the other end 132 of the oil guide rib 130 can flow towards the oil collecting rib 140 along the gap between the oil guide rib 130 and the oil collecting rib 140.
[0096] In some embodiments, such as Figure 4 and Figure 5 As shown, a groove 160 of a housing 100 is arranged on the side of another bearing groove 124 of the housing 100 facing an oil guide rib 130 of the housing 100, and the groove 160 of the housing 100 is spaced from the other end 132 of the oil guide rib 130 of the housing 100. In this way, the lubricating oil flowing out of the other end 132 of the oil guide rib 130 can flow into a groove 160 of the housing 100, and then into another shaft hole 122 of the housing 100.
[0097] In some embodiments, such as Figure 4 and Figure 5 As shown, another groove 170 is also included on the other side of the housing 100. This other groove 170 connects to another bearing groove 124 of the housing 100 and guides the collected lubricating oil into the other bearing groove 124. Thus, under the influence of gravity, the lubricating oil can flow along the other groove 170 into the other bearing groove 124 of the housing 100, achieving passive cooling and lubrication of the gears and bearings of the other output shaft 322 of the other parallel shaft reducer connected to the generator drive. This further reduces the production cost of the range extender powertrain 10.
[0098] In some embodiments, such as Figure 4 and Figure 5As shown, another groove 170 of a housing 100 is arranged on the side of one end 141 of an oil collecting rib 140 of the housing 100 away from the other end 142 of the oil collecting rib 140. A groove 160 of the housing 100 is arranged adjacent to one end 141 of the oil collecting rib 140 of the housing 100. In this way, the lubricating oil collected by the oil collecting rib 140 of the housing 100 can flow into the other groove 170 of the housing 100 along the intervals of one end 141 of the oil collecting rib 140, and then into the other bearing groove 124 of the housing 100.
[0099] In some embodiments, such as Figure 4 and Figure 5 As shown, another groove 170 of a housing 100 is arranged on the side of another oil collecting rib of a housing 100 facing another shaft hole 122 of a housing 100, and the other groove 170 of a housing 100 is arranged adjacent to the other oil collecting rib of a housing 100. In this way, the lubricating oil collected by the other oil collecting rib of a housing 100 can flow into the other groove 170 of a housing 100, and then into the other bearing groove 124 of a housing 100.
[0100] like Figure 4 As shown, one side of the other housing 200 includes a bearing groove 211. The bearing groove 211 of the other housing 200 is used to connect to the reducer housing cavity, and the bearing groove 211 of the other housing 200 is also used to fix another bearing 3113 of an input shaft 311. In this way, the two ends of an input shaft 311 can be supported through a shaft hole 121 of one housing 100 and a bearing groove 211 of the other housing 200.
[0101] like Figure 5 As shown, another bearing groove 212 is also included on one side of the other housing 200. The other bearing groove 212 of the other housing 200 is used to connect to the reducer housing cavity, and the other bearing groove 212 of the other housing 200 is also used to fix another bearing 3213 of the other input shaft 321. In this way, the two ends of the other input shaft 321 can be supported through the other shaft hole 122 of one housing 100 and the other bearing groove 212 of the other housing 200.
[0102] like Figure 6As shown, another bearing groove 213 is also included on one side of the other housing 200. This other bearing groove 213 of the other housing 200 is used to connect to the reducer housing cavity, and it is also used to fix another bearing 3124 of an intermediate shaft 312. In this way, the two ends of an intermediate shaft 312 can be supported by one bearing groove 123 of one housing 100 and another bearing groove 213 of the other housing 200.
[0103] like Figure 6 As shown, one side of the other housing 200 also includes a shaft hole 214. The shaft hole 214 of the other housing 200 is used to connect to the reducer housing cavity, and the shaft hole 214 of the other housing 200 is also used to fix another bearing 3222 of the other output shaft 322. In this way, the two ends of the other output shaft 322 can be supported through the other bearing groove 124 of the housing 100 and the shaft hole 214 of the other housing 200.
[0104] Among them, such as Figure 6 As shown, the distance between another bearing groove 213 of another housing 200 and another bearing groove 212 of another housing 200 is greater than the distance between one bearing groove 211 of another housing 200 and another bearing groove 212 of another housing 200, and the distance between one shaft hole 214 of another housing 200 and one bearing groove 211 of another housing 200 is less than the distance between one bearing groove 211 of another housing 200 and another bearing groove 212 of another housing 200. In other words, another bearing groove 213 of another housing 200 is arranged on the side of one bearing groove 211 of another housing 200 away from the other bearing groove 212 of another housing 200, and one shaft hole 214 of another housing 200 is arranged on the side of another bearing groove 212 of another housing 200 close to the other bearing groove 211 of another housing 200.
[0105] In some embodiments, to make the range-extended powertrain more compact, the outer wall of another bearing groove 213 of another housing 200 may be tangent to the bore wall of a bearing groove 211 of another housing 200. Similarly, a shaft hole 214 of another housing 200 may also be tangent to the bore wall of another bearing groove 212 of another housing 200.
[0106] like Figure 6As shown, another housing 200 also includes another shaft hole 215 on one side. The other shaft hole 215 of the other housing 200 is used to connect to the reducer housing cavity, and the other shaft hole 215 of the other housing 200 is also used to fix another bearing 3132 of an output shaft 313. In this way, the two ends of the other output shaft 313 can be supported through another shaft hole 125 of one housing 100 and another shaft hole 215 of the other housing 200.
[0107] In some embodiments, such as Figure 6 As shown, one side of the other housing 200 includes another oil guide rib 220, which, along the width direction of the first oil guide rib 130, forms an oil guide groove in combination with the first oil guide rib 220. Thus, the other oil guide rib 220 of the other housing 200 can collect the lubricating oil from the first oil guide rib 130 of the first housing 100. Furthermore, the lubricating oil collected by the other oil guide rib 220 of the other housing 200 can lubricate the components on one side of the other housing 200. This improves the cooling and lubrication effect of the gears and bearings on each shaft of each reducer in the range extender powertrain 10, and reduces the production cost of the range extender powertrain 10.
[0108] like Figure 6 As shown, the extension direction of another oil guide rib 220 extends from one bearing groove 211 of another housing 100 toward another bearing groove 212 of another housing 100. The extension direction of the other oil guide rib 220 is inclined relative to the horizontal plane to guide the lubricating oil collected by the other oil guide rib 220 to the other bearing groove 212 of the other housing 100, thereby achieving passive cooling and passive lubrication of the gears and bearings of the other input shaft 321 of the other parallel shaft reducer connected to the generator drive. Therefore, not only can the cooling and lubrication effect of the gears and bearings of each shaft of the other parallel shaft reducer connected to the generator drive be improved, but the production cost of the range-extended powertrain 10 can also be reduced. Furthermore, the performance of the range-extended powertrain 10 is improved.
[0109] It should be noted that the extension direction of the other oil guide rib 220 can be understood as the length direction of the other oil guide rib 220.
[0110] In some embodiments, such as Figure 6 As shown, along the direction of gravity, one end 221 of the other oil guide rib 220 is higher than the other end 222 of the other oil guide rib 220. In this way, the other oil guide rib 220 can guide the collected lubricating oil to another bearing groove 212 of the other housing 200.
[0111] In some embodiments, such as Figure 6As shown, another oil guide rib 220 is spaced between one bearing groove 211 and another bearing groove 212 of the other housing 100. Along the extending direction of the other oil guide rib 220, the distance between one end 221 of the other oil guide rib 220 and one bearing groove 211 of the other housing 100 is greater than the distance between the other end 222 of the other oil guide rib 220 and the other bearing groove 212 of the other housing 100. In this way, the other oil guide rib 220 can better guide the collected lubricating oil to the other bearing groove 212 of the other housing 100, further improving the passive cooling and passive lubrication of the gears and bearings of each shaft of the other parallel shaft reducer.
[0112] In some embodiments, the extension direction of another oil guide rib 220 is the same as that of an oil guide rib 130, and the acute angle between the extension direction of the oil guide groove and the horizontal plane is in the range of [15 degrees, 30 degrees]. This improves the efficiency of the oil guide groove in collecting lubricating oil and the efficiency of the oil guide groove in guiding the collected lubricating oil to another shaft hole 122 of the housing 100.
[0113] In some embodiments, one end 221 of the other oil guide 220 is bent toward the oil outlet 151. This prevents the lubricating oil collected by the other oil guide 220 from flowing back along one end 221 of the other oil guide 220.
[0114] In some embodiments, the length of the other oil guide rib 220 is equal to the length of the first oil guide rib 130. This improves the efficiency of the oil guide groove formed by the combination of the two oil guide ribs in collecting lubricating oil, as well as the efficiency of the oil guide groove in guiding the collected lubricating oil to another shaft hole 122 of the housing 100.
[0115] In some embodiments, another side of the other housing 200 also includes an oil collecting rib. The oil collecting rib of the other housing 200 is spaced apart from another oil guiding rib 220. The distance between one end of the oil collecting rib of the other housing 200 and one bearing groove 211 of the other housing 200 is greater than the distance between the other end of the oil collecting rib of the other housing 200 and another bearing groove 212 of the other housing 200. The distance between the other end of the oil collecting rib of the other housing 200 and the other bearing groove 212 of the other housing 200 is less than or equal to the distance between the other end 222 of the other oil guiding rib 220 and the other bearing groove 212 of the other housing 200. The oil collecting rib of the other housing 200 is used to collect the lubricating oil flowing out from the other end 222 of the other oil guiding rib 220.
[0116] In this way, by simply setting an oil collecting rib at intervals near another oil guide rib 220 on the other side of the other housing 200, the lubricating oil collected by the other oil guide rib 220 can be directed to an oil collecting rib, further reducing the production cost of the range-extended powertrain 10.
[0117] In addition, the other end of one oil collecting rib of the other housing 200 is closer to the other bearing groove 212 of the other housing 200 than the other end 222 of the other oil guiding rib 220. In this way, the oil collecting rib of the other housing 200 can not only collect the lubricating oil flowing out of the other end 222 of the other oil guiding rib 220, but also collect a larger amount of lubricating oil from the other end 222 of the other oil guiding rib 220.
[0118] In some embodiments, one end of an oil collecting rib of the other housing 200 faces a shaft hole 214 of the other housing 200, and the distance between one end of the oil collecting rib of the other housing 200 and another oil guiding rib 220 is greater than the distance between the other end of the oil collecting rib of the other housing 200 and another oil guiding rib 220. The oil collecting rib of the other housing 200 is also used to guide the lubricating oil collected by the oil collecting rib to another bearing groove. In this way, under the action of gravity, the oil collecting rib of the other housing 200 can smoothly guide the lubricating oil it collects to a shaft hole 214 of the other housing 200, realizing passive cooling and passive lubrication of the gears and bearings of the other output shaft 322 of the other parallel shaft reducer connected to the generator drive.
[0119] In some embodiments, such as Figure 6 and Figure 6 As shown, another oil guide rib 220 includes a through hole T, which allows the lubricating oil collected in the other oil guide rib 220 to flow out. The through hole T extends through the other oil guide rib 220 along its thickness direction. In this way, the other oil guide rib 220 can not only guide the collected lubricating oil to another bearing groove 212 of the other housing 200, but also guide a portion of the collected lubricating oil through the through hole T to other components, thereby increasing the cooling and lubrication effect of other components.
[0120] It should be noted that the thickness direction of the other oil guide rib 220 can be understood as the height direction of the other oil guide rib 220.
[0121] In some embodiments, such as Figure 7 and Figure 6As shown, the distance between the through hole T of the other oil guide rib 220 and one end 221 of the other oil guide rib 220 is greater than or equal to the distance between the through hole T of the other oil guide rib 220 and the other end 222 of the other oil guide rib 220. Relative to one bearing groove 211 of the other housing 200, the through hole T of the other oil guide rib 220 is located closer to the other bearing groove 212 of the other housing 200. In this way, the other oil guide rib 220 can guide a portion of the collected lubricating oil through the through hole T to a shaft hole 214 located between one bearing groove 211 and another bearing groove 212 of the other housing 200, achieving passive cooling and passive lubrication of the gears and bearings of the other output shaft 322 of the other parallel shaft reducer connected to the generator drive. Furthermore, this not only further improves the cooling and lubrication effect of the gears and bearings of each shaft of the other parallel shaft reducer connected to the generator drive, but also further reduces the production cost of the range extender powertrain 10.
[0122] In some embodiments, such as Figure 7 and Figure 6 As shown, the through hole T of another oil guide rib 220 is connected to one end face of the other oil guide rib 220. One end face of the other oil guide rib 220 faces a housing 100, and the distance between the end face of the other oil guide rib 220 and the other housing 200 along the width direction is less than or equal to the distance between each bearing groove or each shaft hole of the other housing 200 and the other housing 200. In this way, the other oil guide rib 220 can guide as much of the collected lubricating oil as possible to another bearing groove 212 or a shaft hole 214 of the other housing 200.
[0123] It should be noted that the width direction of the other oil guide rib 220 can be understood as the width direction of the other housing 200.
[0124] In some embodiments, such as Figure 7 and Figure 6As shown, another oil collecting rib 230 is also included on the other side of the other housing 200. The other oil collecting rib 230 of the other housing 200 is arranged adjacent to the other oil guiding rib 220. The distance between one end 231 of the other oil collecting rib 230 of the other housing 200 and a bearing groove 211 of the other housing 200 is less than or equal to the distance between the through hole T of the other oil guiding rib 220 and a bearing groove 211 of the other housing 200. The distance between the other end 232 of the other oil collecting rib 230 of the other housing 200 and another bearing groove 212 of the other housing 200 is less than or equal to the distance between the through hole T of the other oil guiding rib 220 and the other bearing groove 212 of the other housing 200. The other oil collecting rib 230 of the other housing 200 is used to collect the lubricating oil flowing out of the through hole T of the other oil guiding rib 220.
[0125] In this way, by simply setting another oil collecting rib 230 near another oil guiding rib 220 on the other side of the other housing 200, the lubricating oil flowing out of the through hole T of the other oil guiding rib 220 can be directed to the other oil collecting rib 230 of the other housing 200, further reducing the production cost of the range-extended powertrain 10.
[0126] In addition, another oil collecting rib 230 of the other housing 200 is located below the through hole T of the other oil guiding rib 220. In this way, the other oil collecting rib 230 of the other housing 200 can not only collect the lubricating oil flowing out of the through hole T of the other oil guiding rib 220, but also collect a relatively large amount of lubricating oil from the through hole T of the other oil guiding rib 220.
[0127] In some embodiments, such as Figure 7 and Figure 6 As shown, the other end 232 of the other oil collecting rib 230 of the other housing 200 faces a shaft hole 214 of the other housing 200. The distance between one end 231 of the other oil collecting rib 230 and the other oil guiding rib 220 is smaller than the distance between the other end 232 of the other oil collecting rib 230 and the other oil guiding rib 220. The other oil collecting rib 230 of the other housing 200 is also used to guide the lubricating oil collected by the other oil collecting rib 230 to a shaft hole 214 of the other housing 200. In this way, under the action of gravity, the other oil collecting rib 230 of the other housing 200 can smoothly guide the lubricating oil collected by the other housing 200 to a shaft hole 214 of the other housing 200, realizing passive cooling and passive lubrication of the gears and bearings of the other output shaft 322 of the other parallel shaft reducer connected to the generator drive.
[0128] In some embodiments, such as Figure 7 and Figure 6As shown, there is no gap between one end 231 of the other oil collecting rib 230 of the other housing 200 and the other oil guiding rib 220. In this way, the amount of lubricating oil collected by the other oil collecting rib 230 of the other housing 200 from the through hole T of the other oil guiding rib 220 can be increased.
[0129] In some embodiments, such as Figure 7 and Figure 6 As shown, the middle portion of another oil collecting rib 230 of the other housing 200 bends toward the side opposite to the other bearing groove 212 of the other housing 200. In this way, the impact force of the lubricating oil flowing out of the through hole T of the other oil guide rib 220 on the other oil collecting rib 230 of the other housing 200 can be reduced.
[0130] In some embodiments, such as Figure 7 and Figure 6 As shown, another housing 200 also includes a groove 240 on its other side. This groove 240 connects to another bearing groove 212 of the other housing 200, allowing collected lubricating oil to be guided into the other bearing groove 212. Thus, under gravity, the lubricating oil flows along the groove 240 into the other bearing groove 212 of the other housing 200, achieving passive cooling and lubrication of the gears and bearings of the other input shaft 321 of the parallel shaft reducer connected to the generator drive. This further reduces the production cost of the range extender powertrain 10.
[0131] In some embodiments, such as Figure 7 and Figure 6 As shown, a groove 240 of another housing 200 is arranged on the side opposite to one end of an oil collecting rib of the other housing 200. The groove 240 of the other housing 200 and the other end of the oil collecting rib of the other housing 200 are arranged adjacent to each other, and there is a gap between the groove 240 of the other housing 200 and the other end of the oil collecting rib of the other housing 200. In this way, a portion of the lubricating oil flowing out from the other end 222 of the other oil guide rib 220 can flow into the groove 240 of the other housing 200 along the gap between the groove 240 of the other housing 200 and the other end of the oil collecting rib, and then into another bearing groove 212 of the other housing 200. Another portion of the lubricating oil flowing out from the other end 222 of the other oil guide rib 220 can flow towards the oil collecting rib along the gap between the other oil guide rib 220 and the oil collecting rib.
[0132] In some embodiments, such as Figure 7 and Figure 6As shown, a groove 240 of another housing 200 is arranged on one side of a shaft hole 214 of the other housing 200 facing another oil guide rib 220 of the other housing 200, and the groove 240 of the other housing 200 is spaced from the other end 222 of the other oil guide rib 220 of the other housing 200. In this way, the lubricating oil flowing out from the other end 222 of the other oil guide rib 220 can flow into a groove 240 of the other housing 200, and then into another bearing groove 212 of the other housing 200.
[0133] In some embodiments, such as Figure 7 and Figure 6 As shown, another recess 250 is also included on the other side of the other housing 200. This other recess 250 is used to connect to a shaft hole 214 of the other housing 200, and is used to guide the collected lubricating oil into the shaft hole 214. Thus, under the action of gravity, the lubricating oil can flow along the other recess 250 into the shaft hole 214 of the other housing 200, achieving passive cooling and passive lubrication of the gears and bearings of the other output shaft 322 of the other parallel shaft reducer connected to the generator drive. This further reduces the production cost of the range extender powertrain 10.
[0134] In some embodiments, such as Figure 7 and Figure 6 Figure 7 Figure 6 Figure 7 Figure 6 Figure 7 As shown, another groove 250 of the other housing 200 is arranged on the side opposite to one end of an oil collecting rib of the other housing 200, and a groove 240 of the other housing 200 is arranged adjacent to one end of an oil collecting rib of the other housing 200. In this way, the lubricating oil collected by one oil collecting rib of the other housing 200 can flow into the other groove 250 of the other housing 200 along the intervals at one end of the oil collecting rib of the other housing 200, and then into a shaft hole 214 of the other housing 200.
[0135] In some embodiments, another groove 250 of another housing 200 is arranged on the side of another oil collecting rib 230 of another housing 200 facing another bearing groove 212 of another housing 200, and the other groove 250 of another housing 200 is arranged adjacent to the other oil collecting rib 230 of another housing 200. In this way, the lubricating oil collected by the other oil collecting rib 230 of another housing 200 can flow into the other groove 250 of another housing 200, and then into a shaft hole 214 of another housing 200.
[0136] It should be noted that the axial direction of the range-extended powertrain 10 can also be understood as the axial direction of the electric motor, the axial direction of the generator, or the axial direction of the parallel shaft reducer. Specifically, the axial direction of the electric motor is the axial direction of the motor shaft, the axial direction of the generator is the axial direction of the generator shaft, and the axial direction of the parallel shaft reducer is the axial direction of each shaft of the parallel shaft reducer.
[0137] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A range-extended powertrain, characterized in that, The range-extended powertrain includes two housings. One side of one housing includes two parallel motor cavities, which are used to fix the stator of a motor and the stator of a generator, respectively. The other side of one housing encloses the other housing to form a reducer housing cavity, which is used to accommodate two parallel-shaft reducers. One parallel-shaft reducer includes an input shaft, an intermediate shaft, and an output shaft. The other parallel-shaft reducer includes another input shaft and another output shaft. The other side of one housing includes: Two shaft holes are provided, one of which is used to connect the reducer housing cavity and a motor cavity and a bearing for fixing the one input shaft, and the other shaft hole is used to connect the reducer housing cavity and another motor cavity and a bearing for fixing the other input shaft. Two bearing slots, one bearing slot for fixing a bearing on an intermediate shaft, and the other bearing slot for fixing a bearing on another output shaft, wherein the distance between the first bearing slot and the other shaft hole is greater than the distance between the two shaft holes, and the distance between the second bearing slot and the first shaft hole is less than the distance between the two shaft holes; An oil guide rib extends from one shaft hole toward the other shaft hole, and the extension direction of the oil guide rib is inclined relative to the horizontal plane to guide the lubricating oil collected by the oil guide rib to the other shaft hole.
2. The range-extended powertrain according to claim 1, characterized in that, The oil guide ribs are spaced apart between the one shaft hole and the other shaft hole. Along the extension direction of the oil guide ribs, the distance between one end of the oil guide rib and the one shaft hole is greater than the distance between the other end of the oil guide rib and the other shaft hole.
3. The range-extended powertrain according to claim 1, characterized in that, The other side of the housing includes a protrusion, and the side of the protrusion facing the other shaft hole includes an oil outlet. The outlet of the oil outlet faces the other shaft hole, and the oil guide rib is used to collect the lubricating oil output from the oil outlet.
4. The range-extended powertrain according to claim 3, characterized in that, The length of the protrusion is less than the length of the oil guide rib, the distance between the protrusion and the shaft hole is greater than the distance between the other end of the oil guide rib and the other shaft hole, and the distance between the oil outlet and the shaft hole is greater than the distance between the one end of the oil guide rib and the shaft hole.
5. The range-extended powertrain according to claim 1, characterized in that, The oil guide rib includes a through hole for the lubricating oil collected by the oil guide rib to flow out, wherein: The through hole extends through the oil guide rib along the thickness direction of the oil guide rib; The distance between one end of the through hole and one end of the oil guide rib is greater than or equal to the distance between the other end of the through hole and the oil guide rib.
6. The range-extended powertrain according to claim 5, characterized in that, The through hole is connected to one end face of the oil guide rib, wherein: One end face of the oil guide rib faces the other housing, and the distance between the end face of the oil guide rib and the other housing along the width direction of the oil guide rib is less than or equal to the distance between each bearing groove or each shaft hole and the other housing.
7. The range-extended powertrain according to claim 1, characterized in that, The other side of the housing also includes an oil collecting rib, which is arranged at intervals with the oil guiding rib. The distance between one end of the oil collecting rib and one shaft hole is greater than the distance between the other end of the oil collecting rib and another shaft hole, wherein: The distance between the other end of the oil collecting rib and the other shaft hole is less than or equal to the distance between the other end of the oil guiding rib and the other shaft hole. The oil collecting rib is used to collect the lubricating oil flowing out from the other end of the oil guiding rib.
8. The range-extended powertrain according to claim 7, characterized in that, One end of the oil collecting rib faces the other bearing groove, and the distance between one end of the oil collecting rib and the oil guiding rib is greater than the distance between the other end of the oil collecting rib and the oil guiding rib. The oil collecting rib is also used to guide the lubricating oil collected by the oil collecting rib to the other bearing groove.
9. The range-extended powertrain according to claim 1, characterized in that, The other side of the housing also includes another oil collecting rib, which is arranged adjacent to the first oil guiding rib, wherein: The distance between one end of the other oil collecting rib and the one shaft hole is less than or equal to the distance between one through hole of the one oil guiding rib and the one shaft hole. The distance between the other end of the other oil collecting rib and the other shaft hole is less than or equal to the distance between one through hole of the one oil guiding rib and the other shaft hole. The other oil collecting rib is used to collect the lubricating oil flowing out of the through hole of the one oil guiding rib.
10. The range-extended powertrain according to claim 9, characterized in that, The other end of the other oil collecting rib faces the other bearing groove. The distance between one end of the other oil collecting rib and the first oil guiding rib is smaller than the distance between the other end of the other oil collecting rib and the first oil guiding rib. The other oil collecting rib is also used to guide the lubricating oil collected by the other oil collecting rib to the other bearing groove.
11. The range-extended powertrain according to claim 1, characterized in that, The other side of the housing also includes two grooves, each groove extending at an angle relative to the horizontal plane, wherein: One of the grooves is used to connect the other shaft hole and to guide the collected lubricating oil into the other shaft hole; Another groove is used to connect the other bearing groove and to guide the collected lubricating oil into the other bearing.
12. The range-extended powertrain according to any one of claims 1 to 11, characterized in that, One side of the other housing faces the other side of the first housing, and one side of the other housing includes another oil guide rib. The other oil guide rib and the first oil guide rib are combined along the width direction of the first oil guide rib to form an oil guide groove.
13. The range-extended powertrain according to claim 12, characterized in that, The extension direction of the other oil guide rib is the same as that of the first oil guide rib, and the acute angle between the extension direction of the oil guide groove and the horizontal plane is [15 degrees, 30 degrees].
14. The range-extended powertrain according to claim 12, characterized in that, One end of the other oil guide rib and one end of the first oil guide rib are respectively bent toward one side of an oil outlet of the housing; The length of the other oil guide rib is equal to the length of the first oil guide rib.
15. A range-extended electric vehicle, characterized in that, The range-extended electric vehicle includes wheels, a battery pack, and a range-extended powertrain as claimed in any one of claims 1 to 14, the range-extended powertrain being used to receive power from the battery pack and drive the wheels.
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